Lattice coupling and Franck-Condon effects in K-edge resonant inelastic X-ray scattering

Abstract

We discuss recent Cu K-edge resonant inelastic scattering (RIXS) results for CuB2O4, a model system consisting of electronically-isolated CuO4 plaquettes, which exhibits anomalies in the incident photon energy dependence that are not captured by electron-only models. We show that these anomalous features can be qualitatively described by extending the electron-only considerations to include the lattice degrees of freedom. Our findings have important general implications for the interpretation of K-edge RIXS results for electronically higher-dimensional transition metal oxides.

arXiv commentNew J. Phys. 12 (2010) 033001

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• Observation of phonons with resonant inelastic x-ray scattering
• Exploring Quantum Materials with Resonant Inelastic X-Ray Scattering
• High-resolution resonant inelastic x-ray scattering study of the electron-phonon coupling in honeycomb $\alpha$-Li${}_2$IrO${}_3$
• Generalization of the Franck-Condon model for phonon excitations by resonant inelastic X-ray scattering
• Measurement of collective excitations in VO${}_2$ by resonant inelastic X-ray scattering
• Experimental signatures of phase interference and sub-femtosecond time dynamics on the incident energy axis of resonant inelastic X-ray scattering
• Beyond the single-site approximation modeling of electron-phonon coupling effects on resonant inelastic X-ray scattering spectra
• Low temperature dynamic polaron liquid in a manganite exhibiting colossal magnetoresistance
• Theory of electron-phonon interactions in extended correlated systems probed by resonant inelastic x-ray scattering
• Exploring itinerant states in divalent hexaborides using rare-earth $L$ edge resonant inelastic X-ray scattering